Why isn’t the latest update showing up on my iPhone 6plus

Schacon_87 wrote:

my niece has the same iPhone 6 Plus and hers was able to update the newest update.

That is not possible.

One of these explains what happened:

• She does not have an iPhone 6 or 6 plus. She actually has a later model.
• Her “latest version” is not iOS 13.
• She has a jailbroken or otherwise improperly tampered iPhone.

iPhone 6 is not capable of running the newest iOS 13. iOS 13 requires 2gb of RAM, and iPhone 6 only has 1gb of RAM. iPhone 6 will no longer get iOS updates after getting them for over 5 years. If you want the latest software, you need a newer iPhone.

An iPhone 6 cannot run iOS 13. It is limited to iOS 12.

No. If she was able to get iOS 13, she has to have iPhone 6s, which looks identical to iPhone 6.